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Roads in the North Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 2358   Accepted: 1156 Description Building and maintaining roads among communities in th

Cow Marathon Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 4182   Accepted: 2116 Case Time Limit: 1000MS Description After hearing about the epidemi

Labyrinth Time Limit: 2000MS   Memory Limit: 32768K Total Submissions: 3991   Accepted: 1502 Description The northern part of the Pyramid contains a very large and comp

Warm up Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 4830    Accepted Submission(s): 1086 Problem Description 　　N planets are conne

Computer Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4426    Accepted Submission(s): 2229 Problem Description A school bought the f